impressiveness vs richness

impressiveness and richness both are nouns.

Word	Noun	Adjective	Verb	Adverb
impressiveness	Yes	No	No	No
richness	Yes	No	No	No

As nouns, impressiveness and richness are synonyms defined as:

Other synonyms of impressiveness include grandness, magnificence.

impressiveness (noun)	richness (noun)
splendid or imposing in size or appearance	a strong deep vividness of hue
the quality of making a strong or vivid impression on the mind	the property of a sensation that is rich and pleasing
	the property of producing abundantly and sustaining vigorous and luxuriant growth
	the property of being extremely abundant
	splendid or imposing in size or appearance
	the quality of having high intrinsic value
	abundant wealth